Portable speaker



FIG. 1 is a right side perspective view of a portable speaker showing my new design;

FIG. 2 is top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof;

FIG. 8 is a left side perspective view of FIG. 1 in an open position;

FIG. 9 is a bottom view of FIG. 8;

FIG. 10 is a top view of FIG. 8;

FIG. 11 is a left side view of FIG. 8;

FIG. 12 is a right side view of FIG. 8;

FIG. 13 is a rear view of FIG. 8; and,

FIG. 14 is a front view of FIG. 8. 

The ornamental design for a portable speaker, as shown and described. 